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Electromagnetic Field Theory

Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

  2.16.
 Infinity.
 Zero.
 4.32.

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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with

 Law of conservation of energy.
 Newtons law of gravitation.
 Newtons law of motion.
 Gauss theorem.

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Electromagnetic Field Theory
inductance (L2) in parallel without mutual coupling will be

 10 mH.
 5 mH.
 20 mH.
 15 mH.

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Electromagnetic Field Theory
Ohm’s law in point from field theory can be expressed as

 R = ρ × ( l / A).
 J = σE.
 V = IR.
 J = E / σ.

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Electromagnetic Field Theory
A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by

 12t3.
 24t.
 4t3.
 12t.

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Electromagnetic Field Theory
A circular loop has its radius increasing at a rate of 2 m/s. The loop placed perpendicular to a constant magnetic field of 0.5 wb/m2. When the radius of the loop is 4 m. the emf induced in the will be

 0.8 π V.
 0.4 π V.
 8 π V.
 Zero.

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MORE MCQ ON Electromagnetic Field Theory

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